EcoFlow EB300 RIVER 3 Plus Smart Extra Battery (EF-RV-E01-1)

The EcoFlow EB300 RIVER 3 Plus Smart Extra Battery (EF-RV-E01-1) is a compact expansion module designed to increase the energy capacity of the EcoFlow RIVER 3 Plus portable power station. Built with advanced LiFePO4 battery technology, it delivers long-lasting performance, high safety standards, and flexible usability. With wireless connectivity, fast charging support, and standalone USB-C functionality, it offers both expansion and independent power in a lightweight, portable design.

Product Features

Expandable Energy Capacity Module

Adds 286Wh of additional energy storage when connected to the EcoFlow RIVER 3 Plus, significantly extending runtime for portable and backup power applications.

Long-Life LiFePO4 Battery Technology

Uses lithium iron phosphate chemistry rated for over 3,000 cycles to 80 percent capacity, ensuring long-term durability and consistent performance.

Wireless Pogo Pin Connection System

Connects seamlessly to the RIVER 3 Plus using cable-free Pogo Pin technology, enabling secure stacking and stable power transfer without external wiring.

Standalone USB-C Power Bank Function

Includes a built-in 140W bi-directional USB-C port, allowing the battery to function independently as a high-capacity power source for laptops, phones, and other devices.

Smart Battery Management System

Integrated X-Guard protection system monitors voltage, current, temperature, and short circuits to ensure safe and stable operation at all times.

Fast Integration and Charging Support

When paired with the RIVER 3 Plus, the system supports fast AC charging, reaching full capacity in approximately 1.5 hours.

Durable Outdoor-Ready Design

Built with IP54-rated protection against dust and splashes, along with a UL 94V-0 fire-resistant casing for enhanced safety and durability.

Lightweight and Portable Build

Compact design with a low-profile structure makes it easy to carry, stack, and integrate into portable power setups.

Product Specifications

• Model: EB300 (EF-RV-E01-1)
• Battery capacity: 286Wh (12.8Ah, 22.4V)
• Battery chemistry: LiFePO4 (LFP)
• Cycle life: 3,000+ cycles to 80 percent capacity
• Weight: Approximately 3.5 kg (7.72 lbs)
• Dimensions: 234 × 224 × 110 mm
• USB-C output/input: 5V/9V/12V/15V up to 3A, 20V/28V up to 5A (140W max)
• Extra battery port (Pogo Pin) output: 17.5V–25.5V, up to 33A max
• Extra battery port input: 17.5V–25.5V, up to 14A max
• AC charging time (via RIVER 3 Plus): Approximately 1.5 hours
• USB-C charging time: Approximately 3.5 hours
• Solar charging time: Approximately 3.2 hours (up to 220W input)
• Car charging time: Approximately 6.5 hours (via RIVER 3 Plus)
• Operating temperature (optimal): 20°C to 30°C
• Discharge temperature: -10°C to 45°C
• Charging temperature: 0°C to 45°C
• Protection system: X-Guard Battery Management System (over-voltage, over-current, temperature, short circuit protection)
• Durability rating: IP54 battery pack protection
• Fire safety rating: UL 94V-0 flame-retardant enclosure